The way we account for that is is not by outlawing behaviors. Rather, we levy progressive income taxes so that people who are lucky can help people who are less lucky. The most talented basketball players pay a large income tax that helps provide services to those who were not born lucky.

I don't see why estate taxes are any different. It is not fair that some people are born into rich families while others are born into poor families. Nobody is suggesting we outlaw inheritance. But levying an appropriate tax on inheritance and preventing tax avoidance schemes is one way to compensate the unlucky.

Vonnegut was also a socialist (according to Wikipedia).